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Groovy Monkey

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Presentation on theme: "Groovy Monkey"— Presentation transcript:

1 Groovy Monkey

2 About Me Java Developer since 1999 Eclipse Plugin Developer since 2002 Groovy Eclipse committer since 2005 Author of Groovy Monkey

3 About Me “I am not just the author of Groovy Monkey, I'm a user...” -- paraphrased from the founder of “Hair Club for Men” -- James E. Ervin

4 Agenda Why Groovy Monkey? What is Groovy Monkey? I'm from Missouri, Show Me.... Anatomy of a script Script Examples...Batteries Included Future plans Monkey Resources Q&A

5 Why Groovy Monkey? To be more productive with Eclipse, thats why.

6 Why Groovy Monkey? Wanted a tool to facilitate the following:  Eclipse API Exploration Self hosting is too slow and cumbersome Plugin creation is too much overhead for exploration The Eclipse API is complex  Task Automation To add functionality too small to be a plugin  Rapid prototyping with path to a plugin In case the small grows big

7 Why Groovy Monkey? Found Eclipse Monkey but it was too limiting:  Could only write scripts in ECMAScript (JavaScript)‏ There is a nice library called Bean Scripting Framework, so why not let everyone play?  Everything runs in the UI Thread Why not use the Eclipse Jobs API?  Could only invoke code exposed through a DOM What about installed bundles? How about adding library jars?

8 Why Groovy Monkey? I am a power Eclipse User and Plugin developer and I want my life to be easier:  I want to be able to quickly try parts of the Eclipse API without the overhead of a plugin  I want to be able to write quick/reusable functionality (i.e. task automation) to make my life with Eclipse easier  I want to be able to translate the quick and dirty work eventually into a proper plugin

9 What is Groovy Monkey? Groovy Monkey is a branch/port of the Eclipse Monkey tool based on:  Apache Bean Scripting Framework  The Eclipse Jobs API  OSGi framework

10 What is Groovy Monkey? Bean Scripting framework   Monkey predates javax.script in Java 6.0  I don't hate Macintosh people  Provides scripting engines for the most used scripting languages  Allows Groovy Monkey scripts to be written in Groovy, Beanshell and Ruby (soon hopefully Python as well)‏

11 What is Groovy Monkey? The Eclipse Jobs API is the native Eclipse platform support for threading. Allows for three types:  Job: Ordinary job thread, provides a progress monitor and status in the progress view  WorkspaceJob: Batches updates to resource listeners until after the job is complete  UIJob: Runs in the SWT UI Thread

12 What is Groovy Monkey? The OSGi framework packages components in bundles, which are uniquely identified. Groovy Monkey leverages the OSGi container by:  Groovy Monkey can add the classloader of any bundle on the workbench to a script's classloader  Allows Groovy Monkey to do white box introspection of running bundles/plugins

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14 Show me: How to install If not included in your Eclipse distribution, goto the update site: 

15 Show Me: A Script A script has two parts, the metadata and then the script body. /* * Menu: Open Dialog > Groovy * Script-Path: /EclipseMonkeyScripts/monkey/OpenDialog_Groovy.gm * Kudos: ervinja * License: EPL 1.0 * Job: UIJob */ org.eclipse.jface.dialogs.MessageDialog.openInformation( window.getShell(), 'Monkey Dialog', 'Hello World from Groovy' )‏ Right click to run the script from within Eclipse

16 Show Me: A Script: Results The amazing results of this script is:  Drum Roll please Note: Wait for enthusiastic applause from audience

17 Anatomy of a Script Script is composed of two parts: Script Metadata Header  This is the portion that is specific to monkey  Tags serve to setup classloader and configure script Script Body  Vital obviously, but Monkey delegates this to the BSFEngine for the given language.

18 Script Anatomy: Tags Menu  Determines where in the Monkey Menu the script can be invoked/edited

19 Script Anatomy: Tags 'Lang'  The first tag I added to Monkey  By default is set to 'Groovy'  Valid entries are: Groovy *(default)‏ Beanshell Ruby Python**

20 Script Anatomy: Tags Lang cont'd:  Maps to a BSFEngine implementation that is wrapped in an extension point: net.sf.groovyMonkey.lang List of supported languages is not hardcoded Additional language support can be easily plugged in if the BSFEngine implementation can be found.

21 Script Anatomy: Tags Job  The most important part of Groovy Monkey over Eclipse Monkey, running scripts in separate threads.  By default a script is run inside an Eclipse 'Job'  Valid Entries: Job* (default) – org.eclipse.core.runtime.Job WorkspaceJob – org.eclipse.core.resources.WorkspaceJob UIJob - org.eclipse.ui.progress.UIJob

22 Script Anatomy: Tags Job cont'd  Allows us to bind (more on this under DOMs) a progress monitor to the script  Script writer can provide progress and allow cancellation  Scripts become Eclipse Jobs, which means that they can be monitored in the progress view.  One gotcha, UIJob is provided as a convenience, it is best to use it sparingly

23 Script Anatomy: Tags Exec-Mode tag:  Complementary to the Job tag  Allows jobs to be run the the foreground or in the background  Valid values: background* (default) foreground – Eclipse pops up a modal dialog box to show the progress of the script.

24 Script Anatomy: Tags Include  Allows you to include elements in the workspace in the classloader of the script.  Allows you to try new third party jars immediately and makes Groovy Monkey a more general scripting tool  Can add a jar in the workspace or a class folder  Syntax: * Include: /MonkeyScripts/commons-http-client.jar

25 Script Anatomy: Tags Include-Bundle  This is what makes Eclipse API exploration and plugin rapid prototyping possible.  You specify the bundle identifier for a bundle loaded in the workbench and its classloader is added to the classloader of the script.  There are a number of bundles included by default*  Syntax: * Include-Bundle: org.eclipse.ui.ide

26 Script Anatomy: Tags DOM  net.sf.groovyMonkey.dom  An extension provided by a bundle, that provides an API for script writers  They get bound to variable names in the script at runtime.  First step from script to full blown bundle.  There are a set of DOM(s) included by default  Syntax: * DOM: net.sf.groovyMonkey.dom.console

27 “Batteries Included” Groovy Monkey includes several things to hopefully simplify script writing: Default DOM(s)‏ Default Bundles Editor Outline View Sharing

28 “Batteries Included” Default DOM(s):

29 “Batteries Included” DOM(s) included by default: bsf: maps to org.apache.bsf.util.BSFFunctions bundleDOM: Access to the bundle and bundles installed in the workbench bundlerDOM: Utility DOM to allow you to build/package plugins from your workspace jface: Access to the SWTBuilder in groovy for UI work metadata: Access to the ScriptMetadata instance that contains the information defined in the metadata header of the script

30 “Batteries Included” DOM(s) included by default cont'd: monitor: Access to the IProgressMonitor the Script's Job is using. project: Legacy DOM resources: Legacy DOM runnerDOM: Cool DOM that allows you to invoke other scripts in the workspace. window: Access to the IWorkspaceWindow in the current Eclipse workbench. workspace: Access to the IWorkspace instance representing the current Eclipse workspace.

31 “Batteries Included” Default Include-Bundles:

32 “Batteries Included” Groovy Monkey Editor: Code Completion

33 “Batteries Included” Groovy Monkey Editor: Popup commands

34 “Batteries Included” Groovy Monkey Outline View

35 “Batteries Included” Sharing  “A script that is kept to yourself is only useful to you.” -- James E. Ervin from this presentation

36 Future Plans Add Jython engine with support for Include and Include-Bundle keywords Add Glimmer library for GUI work in Ruby Integrate with Plugin Spy Allow scripts to be packaged in bundles

37 Monkey Resources eclipse eclipse

38 Questions?


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